He was too diffident to express his inner feelings
Diffident means lacking faith in oneself, shy, modest.
The root is fid from latin word
fidere, which means to trust.
The words, confident and confidence also has the same roots.
2.You will be punished if you contravene laws of the land.
Contravene means violate or break laws, act contrary to rules and regulations.
The word has two roots i.e. contra means against and ven which is a root of venere means to come.
There are many words formed from ven and vent like convene, convention, invent and invention.
A few examples of prefixes with their roots
The Archaeology department has excavated antiques dating back to 12th century.
Archaeology is the study of ancient people and their culture.
Arch(a)eo, Archa(e) is a Greek derivative which means Old. Archaic also means belonging to an earlier time; old fashioned; language of earlier times.
Besides this, there are also other commonly used prefixes like
Mega -big or large (for example Megalith- big or large stone);
Micro-small ( Microscopic organism);
Poly-many ( Polyglot- a person who knows many languages) and
Omni- all ( Omnipotent-all powerful)
A few examples of suffixes
Arch or Archy is a Greek derivative which means ruler,rule
Anarchy : Lack of rule, disorder
Oligarchy: Rule by a few
Plutocracy: Rule by wealth
Ology is derived from Logos, which means study
Entomology: Study of insects
Etymology: Science dealing with origin and study of
development of words